Mary e



(No Modal.) 2 Sheets-Sheet 1.

H. P. GASKILL. DOUBLE PISTON ROTARY METER.

No. 414,694. 7 Patented Nov. 12, 1889.

ZSheets-Sheet 2.

(No Model.)

H. F. GASKILL. DOUBLE PISTON ROTARY METER.

Patented Nov. 12, 1889.

N. Prrcas. Pho vuihognphzr. Wasmnglw. n. c

UNITED STATES PATENT Fries.

HARVEY F. GASKILTJ, OF LOGKPORT, NElV YORK; MARY E. GASKILL EXECF- TRIX OF SAID HARVEY F. GASKILL, DECEASED.

DOUBLE-PISTON ROTARY METER.

SPECIFICATION forming part of Letters Patent No. 414,694,da.ted November 12, 1889.

Application filed geptemher 5, 1888- Serial No. 284,602. (No model.)

To an whom it may concern: vided with a central stud and an annular lie it known that I, HARVEY F. G! SKILL, web or flange 21, beneath which is a space 5 of Lockport, New York, have invented cer- 22. The outlet-ports are in the top covertain new and useful Improvements in Liquidplate 4c and the flanges 1.8, 11'), and 21. 5 Meters, of which the following is a spcciiica- The pistons 9 and 12 are in the form of fiattlOfifaced annuli, connected by arms 2i and My invention may be best understood from with centralhubs 2b and 27. The hubs travel the accompanying drawings, which represent around the studs (3 and when the meter is a meter containing it in the best form as yet Working, and keep the pistons always in con- IO devised by me, and in which tact with the walls of the cylinders.

Figure l is an elevation, partly in section, 28 is a pin connecting the hubs of the two wlth the upper casing omitted. Fig 2 is a pistons, so that they will move in unison. 6

top view of the cylinders. Fig. 3 is a view 29 is a bentor crooked shaft turned by at right angles to Fig. 1, showing the casing hub 26 as it travels around the stud 6, and 15 in section and the interior parts in elevation. serving to communicate inoiion to the gear- Fig. *1 is a sectional plan of the casing, taken ing in the upper shell, from which motion is on line w .11 of Fig. Fig. 5 is a perspective in turn transmitted through shaft 30 to the plan of the cylinders with piston in place. counting mechanism.

In the several figures, l is the lower casing 32 is the inlet to, and the outletfroin, the 20 or shell. meter.

2 is the upper shell or casing. In operation the liquid to be measured fol- 3 is the cylinder-shell hung from the dialows the course of the arrows. It enters at phragm or covering-plate i, which rests at its 32 and fills the lower shell 1 of the meter; edge upon the lower shell 1. The diaphragm thence it enters the cylinders through their .25 or covering-plate is open at its center, but peripheralinlet-ports, and, driving-the pistons separates the upper and lower shell. around, passes out through the outletports 5 is a bridge bridging the central opening into the upper shell 2; thence it passes down of the cover-plate 4 and provided with the dethrough channel 34 to the out-let pending stud (3. .Vhat I claim is- 0 7 is the upper cylinder. 1. The combination, substantially as set S is the lower cylinder. forth, of the two cylinders axially in line, the 9 is the piston in the upper cylinder. pistons oscillating together therein and pro- 10 is a tongue attached to the piston and vided with fixed tongues, as 10, and the chamextending through a slot in the side of the bers in which said tongues play connected 5 cylinder, so as to separate the space within with the cylinders, but upon opposite sides the cylinder upon one side of the piston from thereof. that upon the other side, the separation op- 2. The combination, substantially as set posite the tongue being efiected by the conforth, of the two-part shell, one part constitact of the piston with the walls of the cyltuting a chamber for the infiuent liquid and 40 inder. the other a chamber for the effluent liquid, 11 is a chamber in which the end of tongue the diaphragm separating the two parts of the 10 plays. shell, the cylinders supported by said dia- 12 is the piston of the lower cylinder. 13 phragrn and having inlet-ports in their pcis its tongue, and 14 the chamber in which it ripheral sides and outlet-ports in their axial 45 plays. sides, the annular flanges 18, 19, and 21, the 15 is the inlet-port of cylinder 7, and 16 pistons oscillating together in said cylinders, (indicated in Fig. 2) is its outlet-port. The and the tongues attached to the pistons and we inlet and outlet ports of the lower cylinder playing in chambers located, respectively, in are diagonally opposite those of the upper the sides of the cylinders.

50 cylinder. The two cylinders are separated HARVEY F. G-ASKILT.

by a space 17, bounded by annular webs or Vitnesses: flanges 1S and 19. F. 1-]. SEYMOUR,

20 is the lower covering-plate. It is pro- 0.1-1 COMES. 

